Deductions & credits

I have a 1098 form with an amount in box 10 real estate taxes and an amount for mortgage interest in box 2.

 

 I also got a letter from the coop with the numbers for real estate and mortgage interest to per share.

i purchased the coop apartment after the beginning of the year ( April 2019) 

These amounts ( real estate and mortgage interest) are different if I do my own calculations.

 

Do I have to calculate the real estate taxes and mortgage interest on my own (multiply by my share) or state the numbers on the 1098 from the coop.